Setup & Testing; Equipment Type Selection Switch (Sw1); Installer Setup Menu; Change System Settings - Aprilaire 8620W Safety & Installation Instructions

INSTAllATION
INDOOR AIR QUAlITY EQUIpMENT WIRINg DIAgRAMS
DEHUMIDIfIER WIRINg
I2 C I1 O/B Y Y2 G RC R W2 W L S2 S1 T1 T2
VENTIlATION WIRINg
I2 C I1 O/B Y Y2 G RC R W2 W L S2 S1 T1 T2
Note: The I1/I2 output is a dry contact closure . The humidifier wiring diagram assumes the control is powering a
solenoid valve . The dehumidifier wiring diagram is for a normally open dry contact input . The ventilation diagram
assumes the control is for a normally closed damper. Refer to the individual humidifier, dehumidifier or ventilation
installation instructions for product specific wiring details .
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HUMIDIfIER WIRINg
I2 C I1 O/B Y Y2 G RC R W2 W L S2 S1 T1 T2
SETUp & TESTINg

EQUIpMENT TYpE SElECTION SWITCH (SW1)

This thermostat has the option of being used in heat
pump or heat/cool systems . Switch SW1 located on the
back of the thermostat's face is used to select this option.
This setting is displayed in the Installer System Settings
under Equipment Type .
Note: Thermostat reboots within 10 seconds after switch
position is changed .

INSTAllER SETUp MENU

HOW TO ENTER THE INSTAllER SETUp MENU AND SElECT EQUIpMENT TO SETUp:
In the Installer Setup, HVAC or Indoor Air Quality setup can be selected. If Indoor Air Quality setup is selected, the
user can then select to set up Air Cleaning, Humidification, Dehumidification or Ventilation.
press [MODE] to set system to OFF .
press [MENU] to enter main menu .
press and hold [SETUp] for seven seconds, [INSTAll
SETUp] appears .
press [INSTAll SETUp] to enter installer setup menu .

CHANgE SYSTEM SETTINgS

SETTING SETTING
DESCRIPTION NUMBER
SETTING
OPTIONS
SW1
HC
HEAT/COOL
HP
HEAT PUMP
HC
HP
press or to adjust the option.
press [MENU] to exit.
press [NEXT] to select option .
If IAQ (Indoor Air Quality) was selected, press
to adjust the Outdoor Sensor setting or IAQ (Indoor
Air Quality) option .
press [NEXT] to select Outdoor Sensor setting or IAQ
(Indoor Air Quality) option .
System Settings can now be changed .
press [NEXT] or [bACK] to page through the settings .
press or to adjust the setting.
press [DONE] to save and exit, or [CANCEl] to exit
without saving .
The thermostat will discard changes and exit if nothing is
pressed within 60 seconds .
To reset the installer settings to the default, reset the
thermostat by pressing the [RESET] button for 5 seconds .
Note: The reset button is disabled when the thermostat
is removed from the wall for programming .
or
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